When that happened, i really wish Bang! to have some DM that would have option to just say "its going to be THIS WAY and we are done talking about it, if you dont like it, leave".

Yes, I agree that in D&D players should accept the decisions of the DM as final, though I’m struggling to see what relevance this has to the debate at hand here, if indeed it’s meant to? We’re not here as awkward players arguing with a DM in the course of the game, but as players providing our feedback before the game starts on what interpretation of the rules we think would be most fulfilling and fun at our virtual table, to inform the DM as they make their choice of how to either interpret or homebrew the rules.
Okay, Larian almost certainly have already decided by now what the full game is going to do, even if they’ve not commented on it, so what we say of preferences now probably won’t make a difference to them. I’m sure they’re already well aware that many players don’t like how Shove currently works and have taken this into consideration, even if they’ve ultimately decided not to change it!
But as you say, mods are also possible to tweak the DM rules if we want, so even if Larian’s mind is fixed I personally still find this kind of debate useful in helping me understand what kinds of mods I might like to see created or use. Or even make, though I’ve not actually tried modding a game myself since NWN so I’d probably better leave it to the experts!